Changes in maternal body composition and metabolism of dairy goats during pregnancy (original) (raw)
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Nutritional and haemato-biochemical modulation in dairy goats during mid-pregnancy
Indian Journal of Animal Sciences, 2018
The present study was conducted to assess the influence of mid-pregnancy on the nutrient utilization, haematological and blood biochemical profile in gravid goats. Sixteen indigenous nondescript does of approximately 3-4 years of age were randomly allotted to two equal groups (PREG and NPREG) of eight each based on individual BW. The goats of pregnant group (PREG) were synchronized, mated and were left for routine group feeding, care and management. They were brought to experiment just 60 days after mating along with the non-pregnant (NPREG) group; both the groups were offered basal diet comprised of concentrate mixture and wheat straw to meet their nutrient requirements. A metabolic trial of six day duration was conducted at 90 days after mating on all the experimental goats to assess the nutritional modulation along with any changes of haematological and blood biochemical parameters at mid pregnancy stages. The results revealed no variation in intake and digestibility of DM, OM and CP. However, the digestibility of NDF, ADF and hemicellulose was higher for PREG does as compared to NPREG control. The balance of nitrogen was positive and comparable between the groups. Blood haematobiochemical profile showed no significant influence of pregnancy on different blood metabolites except that of low serum urea. The serum variables representative of the liver function was within the normal range and were comparable between the groups. It is concluded that mid-pregnancy induces no perceptible nutritional modulation except for subtle improvements in fibre digestibility, and possibly protein utilization in dairy goats.
Journal of dairy …, 1995
Sixty-three multiparous Alpine does were blocked by pregnancy type (single vs. multiple) on d 90 of pregnancy and assigned to one of nine diets to evaluate the interaction of prepartum protein and energy intake on BW change, kidding, and subsequent production and composition of milk. Treatments were factorial with three percentages of CP (8.5, 11.5, and 14.5% of DM) and three concentrations of metabolizable energy (1.80, 2.16, and 2.53 Mcalkg of DM). Does were fed for ad libitum intake during pregnancy and switched to a lactation diet (16% CP and 2.35 Mcal of metabolizable energykg of DM) after parturition. Milk production and composition were recorded for the first 15 wk of lactation. Prepartum BW gain increased quadratically as protein amount increased but was unaffected by energy. Kidding rate, litter weight, and gestation length were unaffected by protein or energy amounts. Milk production in the subsequent lactation increased quadratically in response to prepartum CP (2.59, 3.26, and 3.07 kg/d for 8.5, 11.5, and 14.5% CP, respectively). Milk production increased linearly in response to prepartum metabolizable energy concentration (2.63, 3.05, and 3.26 kg/d for 1.80, 2.16, and 2.53 Mcalkg of DM,
Asian-Australasian Journal of Animal Sciences, 2003
Effect of strategically supplemented pregnancy allowance was ascertained during different phases of gestation on the reproductive performance of does. Gravid does (18) were allotted to 3 dietary treatments HH, HL and LH in a completely randomized block design. All does were provided wheat straw ad libitum and supplemented with concentrate mixture at the rate of 20 g/kgW 0.75 from 0-60 days post-mating. Subsequently, HH group was given concentrate at the rate of 40 g/kgW 0.75 from 61 d post-mating to term. HL group was offered concentrate from 61-90 d post-mating and 121d post mating to term at the rate of 20 g/kg W 0.75 and from 91-120 d post-mating at the rate of 40 g/kg W 0.75 . LH group was provided with concentrate from 61 to 120 d post-mating and 121 to term at the rate of 20 g and 40 g/kgW 0.75 , respectively. Mean total dry matter and concentrate intake (g/kgW 0.75 ) was significantly higher on HH in comparison to comparable intake of HL and LH treatments, however, wheat straw followed the reverse trend. Haematological and biochemical parameters except serum glucose, total serum protein and A:G ratio did not differ significantly among dietary treatments. The gross gain in weight, products of pregnancy at 21 weeks of gestation, pregnant does average daily gain, birth weight of kids and survivability of kids were significantly lower in treatment HL in comparison to comparable values for HH and LH treatments. The net gain in gravid does was significantly higher in treatment HH than the comparable values obtained in HL and LH treatments. The last month of pregnancy was found to be nutritionally most sensitive period of gestation for native goats.
Animal, 2015
The objective of this study was to investigate the effects of maternal protein or energy restriction on hormonal and metabolic status of pregnant goats during late gestation and their postnatal male kids. Forty-five pregnant goats were fed a control (CON), 40% protein-restricted (PR) or 40% energy-restricted (ER) diet from 90 days of gestation until parturition. Plasma of mothers (90, 125 and 145 days of gestation) and kids (6 weeks of age) were sampled to determine metabolites and hormones. Glucose concentration for pregnant goats subjected to PR or ER was less (P<0.001) than that of CON goats at 125 and 145 days of gestation. However, plasma nonesterified fatty acids concentration was greater (P<0.01) at 125 and 145 days for PR and ER than CON. Protein restriction increased (P<0.01) maternal cortisol concentration by 145 days of gestation, and ER decreased (P<0.01) maternal insulin concentration at 125 days of gestation. Moreover, maternal amino acid (AA) concentration...
Evaluation of metabolic profiles of Saanen goats in the transition period
Journal of the Hellenic Veterinary Medical Society, 2020
Healthy Saanen goats (n=30) in periparturient period were used in the present study. Blood samples were collected 21, 14 and 7 days before parturition, at the time of birth and postpartum days 7, 14 and 21. Non-esterified fatty acids (NEFA), betahydroxy butyric acid (BHBA), Total protein (TP), albumin (ALB), blood urea nitrogen (BUN), creatinine (CREA) aspartate amino transferase (AST), gamma glutamyl transferase (GGT), sorbitol dehydrogenase (SDH), glucose (GLU), cholesterol (CHOL), triglyceride (TG), calcium (Ca), phosphorus (P), and magnesium (Mg) levels were evaluated. During the study period, NEFA, SDH, CREA levels increased and CHOL and TG levels decreased at time of parturition. When the changes of parameters in prepartum and postpartum period were compared, the concentrations of NEFA, CHOL, GLU, TG, Ca were higher (p <0.001) in prepartum period;however BHBA, Mg, ALB, GGT, AST, TP, P, BUN, SDH and CREA concentrations were detected to be higher (p <0.001) in postpartum p...
Glucose metabolism in vivo in fed and 48 h starved goats during pregnacy and lactation
British Journal of Nutrition, 1982
1. Glucose turnover (i.e. glucose entry and utilization rates) in fed and 48 h starved goats during pregnancy 2. Glucose synthesis and utilization increased during pregnancy and lactation in fed but not in starved goats. 3. Recycling of glucose-C was approximately 10% in fed animals and 15-20% in starved animals and was unaffected by the stage of pregnancy or lactation. 4. Plasma glucose concentrations were maintained during pregnancy and lactation in fed goats but decreased during 48 h starvation in pregnant goats. Little change was seen in the plasma concentration of lipids and their metabolites during pregnancy and lactation in fed goats, but increases were observed after 48 h starvation. and lactation was determined using a continuous infusion of [U-14C]and [3-3H]glucose.
Influence of Pregnancy and Lactation on Glucose Metabolism of Nubian Goats
Tropical and Subtropical Agroecosystems, 2009
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Glucose metabolism in vivo in fed and 48 h starved goats during pregnancy and lactation
British Journal of Nutrition, 1982
1. Glucose turnover (i.e. glucose entry and utilization rates) in fed and 48 h starved goats during pregnancy 2. Glucose synthesis and utilization increased during pregnancy and lactation in fed but not in starved goats. 3. Recycling of glucose-C was approximately 10% in fed animals and 15-20% in starved animals and was unaffected by the stage of pregnancy or lactation. 4. Plasma glucose concentrations were maintained during pregnancy and lactation in fed goats but decreased during 48 h starvation in pregnant goats. Little change was seen in the plasma concentration of lipids and their metabolites during pregnancy and lactation in fed goats, but increases were observed after 48 h starvation. and lactation was determined using a continuous infusion of [U-14C]and [3-3H]glucose.
Changes in Some Haematological and Biochemical Parameters in Local Black Goats During Pregnancy
The Iraqi Journal of Agricultural science, 2022
The present study was aimed to assess and determine the effects of pregnancy on some biochemical and haematological parameters. This experiment was conducted using 16 pregnant of known gestational period and 4 non-pregnant does raised at commercial farm. Results revealed a non-significant differences between pregnant and non-pregnant does for all studied traits. With the advances of pregnancy, it was noticed an increase (P<0.05) in PCV, Hb, AST, ALT, Glucose and Cholesterol and a decrease in total protein and globulin. In conclusion, it can be indicated that physiological status impacts the traits under consideration.
Pakistan Veterinary Journal
Aardi goats are native to Saudi Arabia and represent the majority of its goat population. They are also known to have high genetic variability in comparison to other goat breeds found all over the world. When it comes to scientific data related to such an important breed, detailed information is lacking on how to help improve the production and reproduction of the breed. This study monitored the metabolic profiles by taking blood samples of Aardi goats weekly, from 4 weeks before until 4 weeks post-partum. In addition, weekly blood samples of their kids were taken until 4 weeks of age. Serum albumin, total protein, cholesterol, and urea concentrations were examined. Pre-partum serum albumin concentrations were significantly lower than those from the post-partum period. There was no significant difference in total protein concentrations between the pre-and post-partum periods. Serum cholesterol was significantly higher during the pre-than the post-partum period. Serum urea concentrations at 3 and 2 weeks pre-partum were significantly higher than those observed-1, 0, 2, 3, and 4 weeks from parturition, and the lowest concentrations were observed-1, 0, 3, and 4 weeks from parturition. In contrast to their mothers, serum cholesterol concentrations of kids increased from 1 to 4 weeks of age, while serum urea concentrations decreased in accordance with their mothers. These results indicate that Aardi goats have certain metabolic profiles that differ from other goat breeds during pre-and post-partum periods.