THE COMPARISON BETWEEN TWO NUTRITION MODELS, NRC (2001) AND CNCPS V.6.1, IN ESTIMATING NUTRITIONAL REQUIREMENTS OF FRESH COWS

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AMANLOU HAMID; SHAFIEI HADI; AMIRABADI FARAHANI TAHERE; KHEIRI FARSHID; ESLAMIAN FARSUNI NAJME

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Journal: Journal of Animal Production Year:2016 | Volume:18 | Issue:1 Page(s): 27-38

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Title

THE COMPARISON BETWEEN TWO NUTRITION MODELS, NRC (2001) AND CNCPS V.6.1, IN ESTIMATING NUTRITIONAL REQUIREMENTS OF FRESH COWS

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Keywords

DRY MATTER INTAKEQ2

ENERGY ALLOWABLE MILKQ2

HOLSTEIN COWQ2

MEAN BIASQ2

MP ALLOWABLE MILKQ2

Abstract

In order to compare the precision of predictions of NRC (2001) and CNCPS models, 17 Holstein fresh cows were assigned in a randomized complete block design to a balanced diet with NRC (2001) and CNCPS software. The predicted DMI, ENERGY ALLOWABLE MILK and protein allowable milk by both models were compared with observed values. The precision of the predictions of models was evaluated by calculation of R2, MEAN BIAS and root mean square prediction error (RMSPE). Both models predicted DMI lower than the observed values (P<0.01). The MEAN BIAS, RMSPE and R2 were 2.22, 2.84 and 0.48 for NRC (2001) and 3.18, 3.99 and 0.52 for CNCPS, respectively and CNCPS predicted the DMI 20 percent lower than the observed value. The observed milk production was 29.78 kg/d. predicted ENERGY ALLOWABLE MILK by NRC (2001) and CNCPS were 25.68 and 22.32 kg/d, respectively. Predicted protein allowable milk with NRC (2001) and CNCPS were 25.80 and 28.37 kg/d, respectively and NRC (2001) predicted the milk production 14 percent lower than observed value. Given the importance of DMI in fresh cows seems NRC (2001) has more precision compared to CNCPS for estimating nutritional requirements.

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References

EFFECT OF CALCIUM BOROGLUCONATE INJECTION PRE AND IMMEDIATELY POSTPARTUM ON PRODUCTION PERFORMANCE, INCIDENCE OF METABOLIC DISORDERS AND SITUATION OF THE UTERUS AFTER CALVING IN COWS FED ANIONIC DIETS

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APA: Copy

AMANLOU, HAMID, SHAFIEI, HADI, AMIRABADI FARAHANI, TAHERE, KHEIRI, FARSHID, & ESLAMIAN FARSUNI, NAJME. (2016). THE COMPARISON BETWEEN TWO NUTRITION MODELS, NRC (2001) AND CNCPS V.6.1, IN ESTIMATING NUTRITIONAL REQUIREMENTS OF FRESH COWS. JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE), 18(1), 27-38. SID. https://sid.ir/paper/209160/en

Vancouver: Copy

AMANLOU HAMID, SHAFIEI HADI, AMIRABADI FARAHANI TAHERE, KHEIRI FARSHID, ESLAMIAN FARSUNI NAJME. THE COMPARISON BETWEEN TWO NUTRITION MODELS, NRC (2001) AND CNCPS V.6.1, IN ESTIMATING NUTRITIONAL REQUIREMENTS OF FRESH COWS. JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE)[Internet]. 2016;18(1):27-38. Available from: https://sid.ir/paper/209160/en

IEEE: Copy

HAMID AMANLOU, HADI SHAFIEI, TAHERE AMIRABADI FARAHANI, FARSHID KHEIRI, and NAJME ESLAMIAN FARSUNI, “THE COMPARISON BETWEEN TWO NUTRITION MODELS, NRC (2001) AND CNCPS V.6.1, IN ESTIMATING NUTRITIONAL REQUIREMENTS OF FRESH COWS,” JOURNAL OF ANIMAL PRODUCTION (JOURNAL OF AGRICULTURE), vol. 18, no. 1, pp. 27–38, 2016, [Online]. Available: https://sid.ir/paper/209160/en

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