Performance, carcass, and meat quality advantages of boars over barrows: A literature review
نویسنده
چکیده
This paper reviews the literature comparing growth performance, carcass, and meat quality data between barrows and boars. Compared with barrows, boars have reduced feed intake, improved feed efficiency, less backfat, higher nitrogen retention, and leaner carcasses. Growth rate of boars will be higher than that of barrows if adequate dietary amino acids are supplied. The improved growth performance and carcass characteristics of boars are primarily due to the anabolic effects of androgens and estrogen produced in the testis. However, administering manufactured anabolic agents, androgens, and estrogens to barrows has not yet been shown to improve growth and carcass in swine.
منابع مشابه
Testosterone and the incidence of boar taint: Effects of testosterone or testosterone propionate on the incidence of boar taint in implanted barrows.
Boars, barrows and barrows implanted with testosterone or testosterone propionate via polydimethylsiloxane (Silastic) capsules were placed on test in individual pens at 10 weeks of age. Each animal was slaughtered at 110 kg and evaluated for growth rate, efficiency of feed utilization, carcass merit and the incidence of objectionable odors (boar taint). Five capsules of testosterone or testoste...
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The aim of this study was to assess the effect of GnRH vaccination in boars (BO), barrows (BA), and gilts (GI) slaughtered at an average BW of 133 kg. Forty BO, 40 BA, and 40 GI were housed individually, fed ad libitum, and divided into 2 groups of 20 pigs per sex, a control group (CON) and a GnRH vaccinated group (IC). The IC group received 2 injections of GnRH vaccine (Improvac) at 70 and 105...
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Two studies were conducted to examine the possible reduction in odors in fat and loin samples from boars treated with porcine growth hormone (pGH). In Exp. 1, boars were treated with either 0 (control: C), 3.5, or 7 mg of pGH daily from 72 to 119 kg BW. Treatment with pGH improved feed efficiency (P less than .05) but did not affect ADG, concentrations of testosterone in plasma, or aroma of coo...
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تاریخ انتشار 1997