EFFECT OF ROASTED SOYBEAN GRAIN COMPARED TO LIGNOSULFONATE-TREATED SOYBEAN ON PERFORMANCE OF LACTATING HOLSTEIN COWS

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RAFIEE H.; GHORBANI GH.R.; ALIKHANI M.; SADEGHI A.

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Journal: JOURNAL OF RUMINANT RESEARCH Year:2015 | Volume:3 | Issue:3 Page(s): 95-115

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Title

EFFECT OF ROASTED SOYBEAN GRAIN COMPARED TO LIGNOSULFONATE-TREATED SOYBEAN ON PERFORMANCE OF LACTATING HOLSTEIN COWS

Author(s)

RAFIEE H. | GHORBANI GH.R. | ALIKHANI M. | SADEGHI A. | Issue Writer Certificate

Keywords

SOYBEAN PROCESSINGQ2

MODERATELY DEGRADED TRUE PROTEINQ2

RUMEN UNDEGRADABLE PROTEINQ2

Abstract

Background and objectives: The use of roasted soybeans in the diet of dairy cows is common, but the roasting temperature and its effect on cow performance and protein fraction of diets have not been fully understood. To eliminate the anti-nutritional substances and increasing bypass protein, soybean seeds are processed, and heat is the most common way used to processing soybeans. The main objectives of this research were the estimate of the effect of soybean roasting temperature on protein fractions of diets, dairy cow performance, and economical comparison between roasted soybean and lignosulfonate-treated soybean.Materials and methods: To evaluate the effect of soybeans roasted at different temperatures on feed intake, milk yield and composition, 8 mid-lactation Holstein cows, averaging 92 ±14 days in milk and 42.9 ±3 kg of milk/day were assigned to a replicated 4 × 4 Latin square design. Control treatment contained lignosulfonate-treated soybean meal and calcium salts of fatty acids, and treatments 2, 3, and 4 contained soybean grains roasted at 115, 130, or 145°C, respectively. The total mixed rations included 40% forage on a dry matter basis and 60% concentrates.Results: Dry matter intake (DMI) tended to be greater for control treatment compared with the roasted soybean treatments (P=0.08). Actual milk and 3.5% fat-corrected milk yield was greater for control diet than for roasted diet (P<0.01). No differences were observed between the control and the roasted soybeans, or between different roasting temperatures on feed efficiency (3.5% fat-corrected milk/dry matter intake). Milk fat was higher for soybeans roasted at 130°C than for those roasted at either 115 or 145°C. Economically, control diet was more expensive than roasted soybean diets and income to feed cost ratio significantly was greater in roasted soybean diets rather than control diet. The diet contained roasted soybean at 130°C rather than other diets had lower digestible protein in intestine. Soybean roasted at 130 and 145°C in comparison with soybean roasted at 115°C and control treatment had lower MODERATELY DEGRADED TRUE PROTEIN (B2) and higher slowly degraded true protein (B3). Rumen degradable protein than rumen degradable protein has greater correlation with milk yield and DMI. Between different fractions of protein, MODERATELY DEGRADED TRUE PROTEIN fraction has high correlation with DMI, milk yield and composition.Conclusion: The results of this research showed that cows fed control diet had higher DMI and milk yield than cows fed roasted soybean diets. Among different roasting temperatures (115, 130, and 145°C), soybeans roasted at 115°C led to higher milk production and lower DMI. The MODERATELY DEGRADED TRUE PROTEIN had the most important fraction between different fractions of protein and highest correlation with DMI and milk yield and composition.

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APA: Copy

RAFIEE, H., GHORBANI, GH.R., ALIKHANI, M., & SADEGHI, A.. (2015). EFFECT OF ROASTED SOYBEAN GRAIN COMPARED TO LIGNOSULFONATE-TREATED SOYBEAN ON PERFORMANCE OF LACTATING HOLSTEIN COWS. JOURNAL OF RUMINANT RESEARCH, 3(3), 95-115. SID. https://sid.ir/paper/244111/en

Vancouver: Copy

RAFIEE H., GHORBANI GH.R., ALIKHANI M., SADEGHI A.. EFFECT OF ROASTED SOYBEAN GRAIN COMPARED TO LIGNOSULFONATE-TREATED SOYBEAN ON PERFORMANCE OF LACTATING HOLSTEIN COWS. JOURNAL OF RUMINANT RESEARCH[Internet]. 2015;3(3):95-115. Available from: https://sid.ir/paper/244111/en

IEEE: Copy

H. RAFIEE, GH.R. GHORBANI, M. ALIKHANI, and A. SADEGHI, “EFFECT OF ROASTED SOYBEAN GRAIN COMPARED TO LIGNOSULFONATE-TREATED SOYBEAN ON PERFORMANCE OF LACTATING HOLSTEIN COWS,” JOURNAL OF RUMINANT RESEARCH, vol. 3, no. 3, pp. 95–115, 2015, [Online]. Available: https://sid.ir/paper/244111/en

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