STUDY OF GROWTH AND CARCASS CHARACTERISTICS OF FI AND RI CROSS LAMBS FROM ZANDI AND ZEL BREEDS

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KHALDARI M.; TAJIC P.

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Journal: Journal of Veterinary Research Year:2006 | Volume:61 | Issue:3 Page(s): 277-284

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Title

STUDY OF GROWTH AND CARCASS CHARACTERISTICS OF FI AND RI CROSS LAMBS FROM ZANDI AND ZEL BREEDS

Author(s)

KHALDARI M. | TAJIC P. | Issue Writer Certificate

Keywords

SHEEPQ3

CROSSBREEDINGQ3

CARCASSQ3

FAT TAILQ4

ZELQ3

ZANDIQ3

FATQ3

BACKCROSSQ3

Abstract

Objective: To study the possibility of reducing the CARCASS FAT content through cross breeding of FAT- tailed ewe (Zandi) with tailed SHEEP breed (Zel). Design: Completely randomized design. Animal: 65 ZANDI ewes as well as 15 ZANDI × ZEL ewes and 6 ZANDI rams. Statistical Analysis: ANOVA followed by Duncan and chi2 and Man Whitney tests. Procedure: In order to synchronize estrous, all ewes were treated for 13 days with controlled internal drug releasing device (CIDR) and eCG hormone. In lambing season, 23 pure F1 and BACKCROSS (RI) out of 61 lambs were FATtened. The FATtening period of ZANDI pure and crossbred lambs were 90 days. Results: The average daily gain (ADG) of pure F1 and R1 lambs were 165(±11), 156(±11) and 162 (±11) grams, respectively. The proportion of lean meat (LM), subcutaneous FAT (SCF) and intramuscular FAT (IMF) of R1 lambs were higher than the Fland the values of the recent values were higher than the pure lambs (P<0.001). The proportion of abdominal FAT (ABF) in R1 and F1 lambs were higher and the bone percentage was lower than the pure lambs (P<0.005). The FAT TAIL/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank"> FAT TAIL proportion in R1, F1 and pure lambs were 3.6, 6.0 and 13.3, respectively. The proportion of body total FAT (BTF) (i.e.fat tail+SCF+IMF+ABF) of RI was higher than the Fl and pure lambs (P<0.005).The percentage of CARCASS total FAT (CTF) (i.e.fat tail+ SCF+IMF) and the proportion of ether extract of R11ambs were lower than the pure lambs (P<0.005). Crud protein, moisture and ash of the debonded CARCASSes between pure and crossbred lambs had not significant difference. Conclusion: Results showed that in crossing ZANDI ewes with ZEL ram, the proportion of BTF had not decrease. Furthermore, in spite of lower FAT TAIL/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank"> FAT TAIL proportion, FAT deposition occured in the other oranges.

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APA: Copy

KHALDARI, M., & TAJIC, P.. (2006). STUDY OF GROWTH AND CARCASS CHARACTERISTICS OF FI AND RI CROSS LAMBS FROM ZANDI AND ZEL BREEDS. JOURNAL OF VETERINARY RESEARCH, 61(3), 277-284. SID. https://sid.ir/paper/35273/en

Vancouver: Copy

KHALDARI M., TAJIC P.. STUDY OF GROWTH AND CARCASS CHARACTERISTICS OF FI AND RI CROSS LAMBS FROM ZANDI AND ZEL BREEDS. JOURNAL OF VETERINARY RESEARCH[Internet]. 2006;61(3):277-284. Available from: https://sid.ir/paper/35273/en

IEEE: Copy

M. KHALDARI, and P. TAJIC, “STUDY OF GROWTH AND CARCASS CHARACTERISTICS OF FI AND RI CROSS LAMBS FROM ZANDI AND ZEL BREEDS,” JOURNAL OF VETERINARY RESEARCH, vol. 61, no. 3, pp. 277–284, 2006, [Online]. Available: https://sid.ir/paper/35273/en

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