Subsequent Daily Digestibility in the Ovine Effects of Dietary Change or Rumen Inoculation upon (original) (raw)
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Journal of Animal and Poultry Production, 2020
Twenty four growing male sheep aged 4-6 months, with an average live body weight of 27 Kg, were grouped into six blocks of 4 sheep each block, to determine the effect of replacing clover hay (CH) by pepper or eggplant vines on their performance, nutrients digestibility, rumen fermentation and blood constitutes.The first experimental ration (R1) as a control, animals was fed concentrate feed mixture(CFM) + CH (50:50),ration 2 (R2)was fed 50% CFM + 50% pepper vines (PV), ration 3 (R3) was fed 50% CFM + 25% CH + 25% PV, ration 4 (R4) was fed 50% CFM + 50% eggplant (EV) vines, ration 5 (R5) was fed 50% CFM + 25% CH + 25% EV and ration 6(R6)was fed 50% CFM + 25% PV + 25% EV. The results revealed that both CP and ash contents in CH and the two vines were convergent, but eggplant had more CF content than CH or PV. Insignificant digestibility of CP and CF between control and pepper rations, while it much significant with eggplant. The TDN values were similar for the tested rations,but it d...
Animal Production Science
While the effect of roughage chop length on decreasing the risk of acidosis in cattle is well established, there is limited information on the effect of roughage processing on intake and rumen parameters in sheep. Intake and rumen parameters were assessed in 10-month-old crossbred wethers (n = 24, 48.4 kg AE 5.3) offered wheaten straw as finely chaffed (6 mm), coarsely chaffed (15-20 mm) or unprocessed (40 mm) lengths, along with barley grain. Animals were offered 300 g/head of barley grain on the first day of grain introduction, 450 g/head.day for Days 2-3, 550 g/head.day for Days 4-6, 650 g/head.day for Days 7-9 and 750 g/head on Day 10. Rumen fluid was collected 3 h post-feeding from each animal the day before grain introduction and on Days 1-3 of grain introduction. During Days 1-3 of grain introduction, roughage intake within 3 h of feed being offered was greater (P < 0.05) in sheep offered finely chaffed (0.20 kg AE 0.03) than those offered either coarsely chaffed (0.09 kg AE 0.03) or unprocessed (0.08 kg AE 0.03) straw. Rumen pH did not differ between treatments, but increased grain feeding significantly (P < 0.001) reduced pH. Sheep offered finely chaffed straw had a greater (P < 0.05) daily straw intake (0.59 kg AE 0.06) than sheep offered coarsely chaffed straw (0.37 kg AE 0.06), while sheep offered unprocessed straw had an intermediate intake (0.49 kg AE 0.06); sheep consumed all grain offered. Shorter straw particle lengths may have a role in reducing the risk of acidosis during grain introduction.
Revista Brasileira De Zootecnia-brazilian Journal of Animal Science, 2003
A trial was conduced to evaluate the effects of Tifton hay (Cynodon dactylon) supplemented with multinutrient blocks formulated using different molasses levels on digestibility, intake, and blood urea level. Four Hereford steers, one year old, weighing on average 196 kg in the beginning of the experiment, were assigned to a 4 x 4 latin square. The treatments were: Tifton hay and Tifton hay plus supplementation with either 25, 30, 35, and 40% molasses levels in multinutrient blocks. However, to include the treatment without supplementation, data were analyzed in a completely randomized blocks design. Supplementation significantly increased dry matter and organic matter digestibility. There were no differences on dry matter intake between treatments. Supplementation decreased the hay intake, showing a substitution coefficient of .58. Supplementation increased significantly total dry matter, organic matter and crude protein intakes. Although there was no significant difference between the supplemented treatments, digestible organic matter and blood urea increased significantly with supplementation. Another trial was conduced with three Hereford steers fistulated in the rumen to determine the effects of supplementation on rumen pH and N-NH3 levels, using a 3 x 3 latin square design. The treatments were: Tifton hay and Tifton hay plus supplementation with 25 and 30% molasses levels in multinutrient blocks. Supplementation did not affect rumen pH but N-NH3 concentration was significantly higher in treatments with blocks.
The effects on nutrient digestibility of hay and silages made in different conditions in lambs
This study was conducted to determine the effects of silages and hay on feedlot performance and nutrient digestibility in lambs, and chemical differences in silages made in different media and forms. Twenty-four Akkaraman male lambs with an average mass of 27.93 kg and 8 months of age were used in the study. Lambs were assigned randomly to three groups. Barley-vetch (50/50%) was used as silo and for hay material two silos were installed. The control group was fed barley-vetch hay. Silo I was exposed to sunshine (group 1). Silo II was established in a long, closed hole which was open to air circulation and half underground (group II). Group III (control) consisted of barley-vetch hay. Dry matter levels were determined to be 33.20, 31.50 and 89.52% in group I-III, respectively. The pH, NH 3-N and lactic acid levels of silages were observed to be 4.62 and 4.55; 0.54 and 0.50%; 2.35 and 2.50%, respectively. Dry matter intakes (DMI) of lambs were 941.44, 894.60 and 1119.00 g in groups I-III, respectively (P<0.05). Live mass gains (LWG) were 141.67, 145.83 and 122.92 g/day in group I-III, respectively. Feed conversion ratios were 6.67, 6.14 and 9.20 g DMI/g LWG in groups I-III, respectively. Dry matter, crude protein and crude fibre digestibility were determined to be 65.
Animal Feed Science and Technology, 2007
Ten Polwarth×Texel lambs (21 ± 3 kg live weight), housed in metabolic cages and fed ad libitum a low-quality grass hay (Cynodon sp.) were used in a replicated 5×5 Latin Square experiment to evaluate effects of supplement type on forage and total intake, rumen fermentation, microbial protein synthesis, digestibility and N retention. Supplements were a non-fibre carbohydrate (NFC) source (i.e., cassava meal), NFC plus a degradable true protein N (TPN) source (i.e., calcium caseinate), NFC plus a non-protein N (NPN) source (i.e., urea:ammonia sulphate, 9:1), NPN alone or no supplement (control). Hay and fibre intake, as well as fibre digestibility, rumen microbial protein synthesis and N retention were lowest (P<0.05) in lambs supplemented with NFC alone. Total organic matter (OM), digestible energy intake, rumen microbial protein synthesis and N retention improved (P<0.05) with supplementation with NFC plus either TPN or NPN. Rumen pH, as well as rumen concentrations Abbreviations: ADFom, acid detergent fibre (exclusive of ash); ADIN, acid detergent insoluble N; CHO, total carbohydrate; CM, hay plus cassava meal; CMCA, hay plus cassava meal plus calcium caseinate; CMU, hay plus cassava meal plus urea; CP, crude protein; DE, digestible energy; DM, dry matter; EE, ether extract; H, hay alone; lignin(sa), lignin determined by the sulphuric acid method; LW, live weight; OM, organic matter; NFC, non-fibre carbohydrate; aNDFom, neutral detergent fibre (with a heat stable amylase and exclusive of ash); NDIN, neutral detergent insoluble N; NPN, non-protein N; RDP, rumen-degradable protein; OMTD, OMtrue digestibility; TPN, true protein N; U, hay plus area * Corresponding author. Tel.: +55 55 3220 8355; fax: +55 55 3220 8355.
Effect of Type of Hay and Concentrate Level in Intake and Digestibility in Diets for Goats
International Journal of Sciences, 2017
The aim of this study was to evaluate the effect of the level of hay and concentrate on total hay intake and supplied already, the additive/substitutive effect and total apparent digestibility of the diet intake in diets for goats. Experiment I: diets: Alfalfa hay (A1), Alfalfa hay + corn (0.5% LW/day) (A2), + 1% LW/day (A3), + 1.5% LW/day (A4). Experiment II: diets: Natural grassland hay (CN) (R1), hay CN + corn (0.5% LW/day) (R2), hay CN + corn (1% of LW/day) (R3), + 1.5% of LW/day) (R4). Intake, ratio forage/concentrate and total apparent digestibility were calculated. Experiment I: There were no effects (p> 0.05) on the CMST for the corn tested levels and recorded a linear decrease (p <0.05) in the CTFDN, CTFDA and CTPB. The CMSF decreased linearly (p <0.05) with increasing amounts of corn by verifying a hay effect on the concentrate. The F/C was different (p <0.05) in all treatments. The DTAIVMS increases linearly (p <0.05) with the content of corn in the diet. Experiment II: a linear increase (p <0.05) on the CMST and CTPB with increasing corn in diet and no differences (p> 0.05) on the CMSF, CTFDN and CTFDA is observed. The F/C and CTPB differ (p <0.05) among all the diets tested. The DTAIVMS increases linearly (p <0.05) with the content of corn in the diet. Therefore, it can be concluded that the increase of maize levels improved the total digestibility of the ration consumed and the substitute or additive effect depended on the quality of the hay used.